http://seminars.apple.com/seminarsonline/aperture/apple/index.html?s=203
Apple is offering a free Aperture seminar. It's a web-based seminar and it's free. Here's the Apple blurb…
See how to work in RAW format as easily as with JPEG, without
intermediate conversions.
Learn how to find the best shots using intuitive compare-and-select tools and a full-screen workspace for comparing multiple images.
Discover how to adjust and color-correct images—without altering a
single pixel in the original photos.
Examine the flexible organizational tools, comprehensive metadata
support, and powerful search tools for finding shots quickly.
Watch how to instantly create contact sheets, print to a local printer,
or order color-managed prints online.
NOTE: Apple UK is offering a different seminar in the form of some new tips on their website at:
http://www.apple.com/uk/pro/techniques/aperture/pictures.html
Aperture Tricks - All About Apple Aperture 